Sheet-metal can.



No. 864,531. PATENTBD AUG. 27, 1907.

w. HAAKER. SHEET METAL CAN. APFLIoATIox' rump run 11 1am @QKW I WILLIAM HAAKER, OF VERONA, NEW JERSEY.

SmET-mTAL CAN.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed February 11, 1907. Serial No 356,695.

To all whom it may concern:

Be it known. that I, WILLIAM HAAKER, a citizen of the United States, residing in Verona, in the county of Esscxand State oi New Jersey, haye invented certain new and useful Improvements in Sheet-Metal Cans, of which the following is a specification, reference being bad therein to the accompanying drawing, in which-- Figure l is a perspective view of the can; Fig. 2 a detail vertical sectional view of the cover seam; Fig. 3 a perspective view of the can showing the cover partly detached; Fig. i a detail perspective view of the can cover before it is secured to the can; Fig. 5 a similar view showing the under side of the cover; Fig. 6 a dctail vertical sectional View showing the parts assembled and before the cover is secured in place; Fig. 7 a detail sectional perspective view showing the method of detaching the cover; Fig. 8 a perspective view of the packing washer or gasket. 1

One of the many objects of this invention is to pro vide a metallic can-with a rip-strip opening device whereby the cover may be readily detached from the can by means of a suitable key adapted to engage the projecting end of the rip-strip.

Another object of the invention is to fold the ripstrip in between the parts of the seam by which the cover is permanently attached to the can body so that said rip-strip and the cover may be secured in'position by one and the same operation.

A. still further objectoi the invention is to provide a rip-strip and a packing washer, and to loldv the same into the scamby which the cover is attached to the body of the can, whereby the can will besealed and the ripstrip will be placed in position, by one and the same operation.

Refelring to the various parts by numerals, 1 designates the body of the can which is provided to its upper edge with the outw d turned flange 2. he can cover 3 is provided with a slightly depressed portion 4 which fits the interior of the can, and with the outward-projecting fiat part 5 which is adapted to lie over the flange 2. This part 5 extends a considerable distance beyond the outward turned flange oi the body part, which is shown clearly in Fig, 0. The part 5 is radially slit as shown clearly at G, in Fig. -'l and Fitting closely against the lower side oi this part or liange and. close to the outer wall of the depro.- d part his a llat circa-- lar rip-strip 7 of suitable metal, said strip being rectaze gular in crosssection. The purpose of employing 2. lat strip having an anguluwoross-se ion is to strip off the llll'liv'l over portion ot' the cover flange so as not to leave it attached to the can. the upper edge ol th strip on ollectlve cutting edge is pmvidod which assists materially in the operation of separating the turrul--ovcr portion of they flange from the cover. One end of this rip-strip is extended up- .15 y providing a sharp owner at said flange, as shown clearly at 8 in Fig: 4. Fitting over the rip-strip and adapted to lie between said strip and the flange 2 of the body part of the can is a washer'Q of suitable packing material. 7

When the parts are assembled as shown in Fig. 6 of g the drawings, the cover is secured in position by means of what is known as a double seam, that is to'say, the outer edge of the part 5 of the cover is first curled under the flange 2 of the body 01' the can, and then the engaged flanges are turned down flat against the body of the can, the edge of the flange 5 being caught between the flange 2 and the can body, as shown clearly in Fig. 2. The result of this is that the sealing material is clamped over the upper edge of the can body by the cover, and the ripetrip lies parallel with the outside of the can, and extends around the can just out-side of the flange 2, theses-ling material lying between said flange and the rip-strip. The flange 5 oi the cover extends around the rip-strip, as previously stated, and its edge is engaged under the edge of the flange 2.

That portion oi the ripstrip which was extended 1, and forms a convenient means by which the rip-strip may be operated. This projecting end. of the ripstrip is engagcd in the slot of a key ll), which is then rotated to wind the rip-strip thereon. By this means the bent ever part of the flange 5 will be torn and sepa rated from the cover part at the upper edge of the seam, shown clearly in Fig. 3 and 7. By a continued ro tation oi the key the ripstrip and the tm'nedoverpart oi the cover flange will be wound on the key, and the cover thereby detached It will be noted thatas shown in the drawing,the rip-strip does not extend entirely around the flange 5 on the under side thereof, so that when said ripstripis entirely wound upon the operating key there will be a short unbroken part of the flange 5 which will equal in length the length oi the projection of the rip-strip on the upper side of the flange 5. This unbroken part oitlic flange will serve asa hinge lay-which. the cover will be connectedto the body of the can. it is evishallow or flat cans, but of course, it'is applicable to all forms oi cans, wherein the coyer is secured to the body of the can by 'a folded metal seam l. A sheet metal can comprising a can body flanged at its upper end, and u cover having its outer edge bent word throu h the slit (.5. and lies on the upper surface of 1 over and down on the outer side or the body and interlocked with the flange on the body, and a rip-strip within said south and projecting therefrom at one point, said strip being angular in cross-section to provide a cutting edge, who by the said projecting end of the rip-strip may be grasped and the cover detached from the edge of thecan at the stenlll (hereolT.

2. A sheet, metal can comprising-n body part flanged at its upper end, :1 cover formed with a depressed part adapted to fit within the cum and with a flanged part. to tit over the flange of the body part, sealing inz terinl between the cover and the upper edge of the body, and a rip-strip between the flange oi the can and the turned over flange of the cover on the outer side of the sealing material, said rip-strip being;- substantially equal in width to the flange on the run, whereby when the rip-strip is operated the entire turned over tlzinge of the cover will be torn from the rover at: the upper edge of the body part.

ii. A sheet metal can comprising a body part: flanged at its nppvroiid, it cover provided with a. flanged part to fit; over the flange of the body part, rt paper washer between the cover and the upper edge of the body part, and a rip strip between the flange of the can and the turnedmver said rip strip being rectangular in or section to provide a cutting edge, whereby when the rip strip is operated the entire turned-over ilnnge of the cover will be torn from the can at the upper edge of the'hod part thereby detaching all parts of the eoi/er from the can body; I

4] A sheet iitetal can comprising :1 can body tlttnged .tit. its upper end, :1 cover having its outer edge bent over and down on the outer side of the body and interlocked with the body flange, and :1 rip s 'ip within mid seam and pr0- jeeting therefrom at one poi1it z\i(l strip Doing angular in cro action to provide :1 cutting edg'e. whereby the projecting end of the rip strip may be 5 .isped :l i'td the entire turned-over part of the cover detached from the can body and from the cover.

' In testimony whereof I hereunto nflix my signaturev in the presence of two witnesses this 8th day of l ebrnnryf 

